User Image Upload

[Kurt-Dekker]

You use the word “upload” but nothing in your code above has anything to do with the network.

If you want stuff sent by network from Unity, use UnityWebRequest().

Alternatively you may try to use something else and then spend weeks chasing around a ton of C# and .NET incompatibilities before finally coming back around to using UnityWebRequest in the end, your choice.

As with ANYTHING networking-related, use this approach:

Networking, UnityWebRequest, WWW, Postman, curl, WebAPI, etc:

Using Unity for subscription lists

As with all network code, get it working with Postman or curl first. That makes it NOT a Unity problem. Solve the networking first. You must solve that or anything else is irrelevant. Once you have that working, then try and port it to UnityWebRequest. If it still doesn't work, one handy debug solution is to hook up a proxy like Charles and compare the functioning output from Postman / curl to the output from Unity, and from that reason about where your issues are.

Unity web request acting stupid.

Always get network stuff working outside of Unity in either curl or PostMan, then connect a proxy such as Charles and start trying to replicate the traffic shape with UnityWebRequest. Any other way risks wasting a lot of your time for trivial issues that only the above way will instantly reveal.

And setting up a proxy can be very helpful too, in order to compare traffic:

Using Charles Proxy with Unity